Doughnut making machine



Filed Oct. 18, 1951 3 Sheets-Sheet 1 )0 69 4 a 95 I? 4% INVENTOR.

ATTCI RN EYS 1954 M. COTTINGHAM 2,669,949

DOUGHNUT MAKING MACHINE Filed Oct. 18, 1951 3 Sheets-Sheet 2 i II I I IH 5 11 IN YEN T OR. 7 %ori"eiivkfdl7? fylam,

ATTD R N EYE Feb. 23, 1954 coTTlNGHAM 2,669,949

DOUGHNUT MAKING MACHINE Filed Oct. 18, 1951 3 Sheets-Shearv 3 INVENTOR.

Worfisanfoiiifi ATTD RN EYE Patented Feb. 23, 1954 aseaswDOUGHNUTMAKI'NG s Mormison Gottingham, Shrevopont 'nlsa assixnor to FW'.R.-. Stephens-.Investment 'sGompany; 1110,, s Little Rock,--Ark., acorporation flffiAllkfllISB-S Aiifilicdtidnbdtobefifi,1951;""SeflaFNoR25l5946 la Claimsi 1 .fl'his inventionxrel'ates to Lmaohines r'foriirdi'scharging zdougni'inirings sfor amaking doughnuts,and inparticular a hopp'errhaving ia= .ey1indrica1 spoutrat. the lowerend'of -a conical ishapednzsec- :tion with discs positioned :toztraveltinzsaid :cylindrical spout and. -with-=avmoto'ra and mam-combina- .tionmounted on a 'bar' having a-handlesi on" :the ends positionedi on theupper end of the hopper andiconnected with-rods (to saiddisc. 1filheipurpose of this invention :isvto :provide :a ,comparativelyfsmalldoughnut ;-machine whereby relatively :ismall restaurants: using adoughnut mix, :maydrop =comparatively :small uantities of dough :rings-(into; heated oil or the" like thereby making-it possible to maintaina-lsupph :of .-fresh doughnuts on hand :continuously. "With theconventional doughnut making=.-machines where edoughnuts are made in(large =guanisities it has not proved .-.profitab1e vtohoperate themachine. for :making small quantities of. doughnutstand :for this reasonthe vmachines are oper- ,ated once -a 'dezy or even several "times 'weekand doughnuts offeried to xthertrade generally --are not desirable. 1With this thought in-imindrithis inventions contemplates =atuom-pl'etezdoughnut forming ma'chin'e that Iis iih'e'ld by1hand-tover-'a pan of hot'o'il or grease and'that may ibe operated to drop as manydough rings as desired.

The object of this invention is, therefore, to provide means 101'"forming" an improved doughnut machine whereby "dough rings for "makingdoughnuts may be formed in small quantities.

Another -.object ofthe invention is "to 'pr'ovide a doughnut ."formingmahinefin" which doughnuts iformed .on 'theimachine .are. uniform insize.

TdiSC'S sli'dabiy rmounsednn said atcylindricainspout with amountingbarextended acrossthe upper lendfof'fbh'e hoppeniandwithaamotor, eamn'ndirofl combination-mounted on :the bafiand; neurones to actuate the:discs.

' motor .1 enda ,2 tion will: appear 5 from the fi olil'm' ing ideseripti'on taken inconnection with the drawingswlreiiein: @Eigurefi's*aawerticairsection :through ithe Eimaprovedw oughnu-ta machine withquarts-thereof shown:,.m tnievat-ion. 5" ::Figure :2 is a'ivsimilar:sectionithrough :the unachine taken on line 2-2 of Figure 1. v: TE'igure 'is azcpianeview'rofithennaehineimith parts'zhrokennaway. 1Eigure s4 *is a :tonoss sect-ion nthroiigh the; hopper of them-achinertakenrlonriine. fof rhi gure '1 and iookingr-iupwardty :towardthe. under side" of the motor and cam mounting QDOSIti'OIIEdQOII theupper: end iorzatheihopp r.

{Figure "5 is :a. detail: showing a-rzsectronsssimi-lar to that shown inFigure 2 illustratingzthe'rposition of ntheicams and disesMith-thexlowendise. closing the -.spont-andi with the. supperdiscelevated to sperm-it: dough ato pass mtOQthB SDOIW.

i igure 6 is zai-similarrsectionshowing the lower .disc imovededownwardly by the cam.

1 Eigure 7 :is also ia similar section-showing. the "lower disc; initheJOWBI ppOSitiOI]; Land the upper disc the eposition of .forcing thedough rthrough the-qspou't.

v li'igure -8 is a similar section showing :thelower disc returned to:thetpositon of closhigothe lower end of theMspQut and showing the/upperdisc in the nppenenii ofithe ispout.

Figure l'9-Iis a cross section through. the ispout taken on. line :949 fEigure 8.

v LQFigufe $10 is a =;setion ithroughstheiupper part of the.m'ao'hineshowing Ithamdtonmountine. .J Fignre. T1 -;is a. detailshowing a 'cotter pin .extendedthroughthe tubular motorfsha'ft. LfligurT2 isia detail showing 'the.;cam operating shafft spaoedffitom lthefiend'df Tthe mot0r is'ha'ft.

Eigure 1,3 is 'a section taken on 'line' 'l'3.+13 of Figure "lds'howing,aguide carried by .thercam aotuatedrod anti providing a'guide forithetcam actuated .ro'd.

Figure 14 is T'a det'a'lii showing the cam. l Fi e :5 ts "a dia amm vlewisho ns th end "of" th nrotor' Witn'the' :switch conneetions thereto rv ifiefeigringanow' to, "the :di'tawings' wherein "iike reference"characters denote Icorrespondin'g parts 'theimproved dou'ghnut forming"machine of this invention includes "a jhopper" "f0 having "a conicalshaped-Tower section H "*with a -cylindrical "spout l z exteniied "fromthe .Iower end; an upper disc 'ffliz-tcarriedi on the"; end of 1 a rod 14, "a "lower disc irhand-l'esor gnpsz'o end new end of the conicalshaped section I I and the lower end of the spout is provided with asection 29 of reduced diameter which provides a comparatively thincutting edge 39 that coacts with the peripheral edge on the upper sideof the disc I to cut the conventional opening in the center of the doughforced from the lower end of the spout.

The spout I2 is provided with a spider 3I hav ing a boss 32 at thecenter in which the rod I6 is slidably mounted, and the ends of thespider are secured to the walls of the spout with screws 33 and 34.

The lower disc I5, which is provided with an annular recess 35 isthreaded on a stud 36 at the lower end of the rod I5 and the upper discI3 is provided with a bearing 31 through which the rod I6 slides.

The lower end of the rod I4, on which the disc I3 is carried, isprovided with a stud 38 and the lower end of the stud is peened orriveted to secure the disc I3 in position thereon.

The upper end of the rod I4 is mounted bya similar stud 39 in a crossbar49 and the bar 49 is slidably mounted on pins M and 42 that extenddownwardly from the under surface of the mounting bar I9;

The cross bar is actuated by a vertically disposed rod 43 thatisslidably mounted in an opening 44 in the mounting bar I9 and that isconnected by a stud 45 to the cross bar 49. The upper end of the rod 43is attached to a horizontally disposed channel 46 and the channel 46 ismoved upwardly and downwardly by a roller 41 mounted on a stud shaft 48which extends through a slot 49 in the cam H. The shaft 48 is secured inposition in the slot by a nut 59 which is threaded on a threaded end 5|of the shaft.

With the parts arranged in this manner the rotation of the cam I! causesthe roller 4 I to travel around the center and in traveling, asindicated by the broken line 53, the roller, engaging the inner surfacesof the channel 46, carries the channel upwardly and downwardly wherebythe cross bar 49 is moved correspondingly by the rod 43 and the crossbar 40 through the rod I4 moves the disc I3 through the differentpositions illustrated in Figures 5 to 8 inclusive.

At the same time, with the peripheral surface of the cam I1 engaging theroller 54 journaled in the upper end of the rod IS, the disc I5 is moveddownwardly by the cam compressing dough in the spout and upon continuedmovement of the cam from the position shown in Figures 6 and '7 to theposition shown in Figures 8 and 5 a spring 55, in a cup shapedcasing.56, returns therod I6 with the disc I5 whereby the, disc closes thelowerend of the spout. Theroller. 54 is mounted in a yoke 51, and theupper end of the spring 55 bears against the lower end of the yoke.

A clamp 58, secured on the rod I6 with a screw 59 is provided with asection having an arcuate surface 60 and the surface .69 provides aguide forthe rod I 4 as shown in Figure 13.3.

- A shaft 52,-01-1 which the oa is journaled in a hub 5i extended from abracket 4 62 and the bracket is mounted on the mounting bar I9.

As illustrated in Figure 10, the bracket is provided with extended arms63 and B4 and the arms are provided with arcuate slots 65 and 66,respectively, in which thumb screws, 61 and 58, threaded in hubs 69 ofthe motor housing are positioned with the motor housing securedto'thebracket.

The end of the shaft 52 is provided with a slot 69 which is positionedto receive a cotter pin I0 extended through a tubular end II of theshaft extended from the motor, this connection being illustrated inFigures 11 and 12.

It will be understood that a motor of any suitable-type or design may beused, however, it is preferred to use a motor having comparatively slowspeed wherein the motor shaft may be directly connected to the cam. Inthe design shown the motor I B is provided with a field Winding 12 andthe winding is connected by a wire I3 to a terminal I4 of a switchhaving a contact bar 15 and the opposite terminal 15 of the switch isconnected by wire 'I! to a source of current supply with a wire extendedfrom the source of current supply connected by a wire 18 to the oppositeside of the field winding.

The contact bar 15 is carried by a stem 19 that is slidably mounted in awall of the motor housing I8 and a button 89 on the outer end of thestem is resiliently held outwardly with a contact bar 15' spaced fromthe contacts 14 and I6 by a spring 8 I. By this means the button 89 ispressed inwardly to complete the circuit to the motor and with thebutton positioned adjacent tothe grip 20 on the end of the mounting barI9 the motor may be turned on and off as desired.

With the parts arranged in this manner th machine may readily be takenapart for cleaning and, as shown in Figure 4 the brackets 23 and 24 bywhich the mounting bar I9 is attached to the hopper are provided withopen slots 82 and 83, respectively, in which the thumb screws 25 and 26are positioned. The lower disc I5 is readily removed from the lower endof the rod I6 and with the thumb screws 25 and 25 released from theslots 82 and 83 the entire mechanism may readily be removed from thehopper.

Operation With the parts assembled as illustrated in Figure 1, a batchof dough from a doughnut mix is positioned in the hopper I9 and as themotor is started the discs I3, and I5 are actuated from'the positionsshown in Figure 1 to the positions shown in Figure 5 in which the doughin the hopper travels downwardly in the cylindrical spoutand withcontinuous movement of the cam the upper disc moves downwardly with thelower disc remaining in the lower end of the spout whereby the dough iscompressed. With continuous movement to the position shown in Figure 7,the upper disc drops downwardly into the cylindrical and the lower discremains stationary Whereby the dough is expanded forming aring with theconventional hole in the centers The upper discs then continuesdownwardly, asillustrated in Figure '7; and the lower'disc travelsupwardly to close the lower end of the spout, as illustrated in Figure8. This completes a cycle of operations and as the motor continues torotate the discs move fromthe position shown in Figure 8 to that shownin Figure 2 wherein-all dough rema nin t -low ra ofit e s o f coutwardly.

be made in the design and arrangement of the parts without departingfrom the spirit of the invention.

What is claimed is:

1. A doughnut forming unit for use on a dough hopper having a verticallydisposed depending spout comprising upper and lower vertically spaceddiscs positioned to slide longitudinally in said spout, a mounting barpositioned on the hopper, spaced vertically disposed pins depending fromsaid mounting bar, a cross bar slidably mounted on said pins, meansconnecting the cross bar to the upper disc, a cam journaled on themounting bar, a roller mounted on one side of the cam, a rod having ahorizontally disposed channel on the upper end extended from the crossbar, slidably mounted in the mounting bar, and positioned whereby thechannel extends over the roller of the cam, a rod extended upwardly fromthe lower disc, through the upper disc, and having a roller journaled inthe upper end, means resiliently urging the rod with the roller thereonupwardly with the roller engaging the surface of the cam, and means forrotating the earn.

2. A doughnut forming unit for use on a dough hopper having a verticallydisposed depending spout comprising upper and lower vertically spaceddiscs positioned to slide longitudinally in said spout, a mounting barpositioned on the hopper, spaced vertically disposed pins depending fromsaid mounting bar, a cross bar slidably mounted on said. pins, a rodspaced laterally from the center of the spout and positioned with oneend connected to the cross bar and the other to the upper disc, a camjournaled on the mounting bar, a roller mounted on one side of the cam,a rod having a horizontally disposed channel on the upper end extendedfrom the cross bar, slidably mounted in the mounting bar, and positionedwhereby the channel extends over the roller of the cam, a rod extendedupwardly from the lower disc, through the upper disc, and having aroller journaled in the upper end, a sprin positioned around said rodfor urging the rod with the roller thereon upwardly with the rollerengaging the surface of the cam, and means for rotating the cam.

3. A doughnut forming unit for use on a dough hopper having a verticallydisposed depending spout comprising upper and lower vertically spaceddiscs positioned to slide longitudinally in said spout, a mounting barpositioned on the hopper, spaced vertically disposed pins depending fromsaid mounting bar, a cross bar slidably mounted on said. pins, a rodspaced laterally from the center of the spout and positioned with oneend connected to the cross bar and the other to the upper disc, a camjournaled on the mounting bar, a roller mounted on one side of the cam,a rod having a horizontally disposed channel on the upper end extendedfrom the cross bar, slid ably mounted in the mounting bar, andpositioned whereby the channel extends over the roller of the earn, arod extended upwardly from the lower disc, through the upper disc, andhaving a roller journaled in the upper end, a spring positioned aroundsaid rod for urging the rod with the roller thereon upwardly with theroller engaging the surface of the cam, means for rotating the earn, aspider having openings therethrough positioned in the spout andproviding a guide for the rod extended upwardly from the lower disc, anda clamp secured to the rod extended from the lower disc and having arecess therein providing a guide for the rod extended from the upperdisc, said mounting bar having handles extended from the ends thereof,said handles positioned on opposite sides of the hopper.

MORRISON COTTINGHAM.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,811,564 Schoel June 23, 1931 1,866,061 Schoel July 5, 19321,867,307 Carpenter July 12, 1932 1,909,570 Carpenter May 16, 1933FOREIGN PATENTS Number Country Date 6,372 Australia Mar. 12, 1928426,342 Great Britain Apr. 1, 1935

